LandscapingCalc

Dichlor dose calculator

PRO

Dichlor (56%) to raise your free chlorine.

Inputs

Pool volume

gal

Raise FC by

ppm

Result

Dichlor

1.4 oz

CYA added

2.7 ppm

Pro calculator

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The formula

oz = (gallons ÷ 10,000) × 0.23 × ppm to raise.

Worked example

20,000 gal + 3 ppm FC = 1.4 oz dichlor.

Frequently asked

›Watch CYA

Dichlor adds ~9 ppm CYA per 10 ppm FC — stop using once CYA is 50+.